Act 2: Aya, asleep didn’t realize she was being tied and carried to the restrooms. The killer had already set up the scene. The killer entered the vents and stuck knives through the ceiling vent The killer must’ve been that slim to easy fit in the vents They knew if the didn’t go through the vents they would be caught going to restroom

Act 3: the killer used a whip to tie the rope that held Aya to the ceiling lamp and one to her But the killer realized that we figured out Aya was already gone. So she decided to make a break for it She grabbed the end rope and jumped out the window The force pulled Aya up to the knives and they went right through her, killing her instantly

Act 4: the killer held the rope for a long time to make sure she bled out and then dropped her body to the ground But the killer didn’t realize during the process, she lost a button that held her overcoat and that helped us draw closer to the killer